Get a delivery or read receipt
A delivery receipt tells you that an email message was delivered to the recipient's mailbox, but not whether the recipient has seen it or read it. A read receipt tells you that a message was opened. In both cases, you receive a message notification in your Inbox.
Note: The message recipient might decline to send a read receipt. In addition, the recipient's email program might not support read receipts.
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In the open message, click Options.
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In the Tracking group, select the Request a Delivery Receipt or the Request a Read Receipt check box.
To learn how to turn on these options for all messages that you send, see Be notified when others receive or open an email message.
Note: Receipts are delivered to your Inbox, and are shown with this icon: 
